Table 1. Deficiency cut off levels of micronutrients and hemoglobin.

	Age group	Gender	Cut off levels	Reference
Calcium	6 to 16 years	male & female	<10 mg/dl	[29, 30]
Iron			<70 μg/dl	[31, 32]
Selenium			< 5.5 μg/dl	[33]
Zinc	< 10 years	male & female	<65 μg/dl	[34]
	≥ 10 years	Male	<70 μg/dl
	≥ 10 years	female	<66 μg/dl
Vitamin A	6 to 16 years	male & female	<20.0 μg/dl	[35]
25 Hydroxy Vitamin D			<12 ng/ml	[36]
Folate			<3 ng/ml	[37]
Vitamin B12			<203 pg/ml	[36]
Mild-Anemia (Hemoglobin levels)	6 to 11 years	male & female	11.0 to 11.4 g/dl	[28]
	12 to 14 years	Male	11.0 to 11.9 g/dl
	12 to 16 years	female	11.0 to 11.9 g/dl
	15 to 16 years	male	11.0 to 12.9 g/dl
Moderate-Anemia (Hemoglobin levels)	6 to 16 years	male & female	8.0 to 10.9
Severe-Anemia (Hemoglobin levels)	6 to 16 years	male & female	< 8.0